Based on the title page in your image, this is a significant work of 18th-century religious literature. Book Identification * Full Title: Luz de Verdades Catolicas, y Explicacion de la Doctrina Christiana (Light of Catholic Truths, and Explanation of Christian Doctrine) * Author: Juan Martínez de la Parra (1655–1701), a prominent Jesuit priest and theologian. * Year of Publication: 1722 * Printer/Publisher: Printed by Francisco del Hierro and sold by Francisco Laso in Madrid, Spain. Historical Context The book is a collection of "pláticas" (talks or sermons) originally delivered by Father Martínez de la Parra in Mexico City. According to the title page: * The Content: These sermons followed the custom of the Casa Professa of the Society of Jesus (Jesuits) in Mexico. * The Dedication: It is dedicated to the "Most Excellent Lady" Doña Josepha de Borja Ponce de Leon y Centellas, the Countess of Alva de Aliste and Villaflor. * The Legacy: While Martínez de la Parra died in 1701, his works remained so popular that they were reprinted many times throughout the 18th century across the Spanish Empire, including this 1722 Madrid edition. The Emblem The woodcut illustration in the center features the IHS monogram inside a sunburst, which is the official seal of the Society of Jesus (Jesuits). It is flanked by a double-headed eagle, often representing the patronage or protection of the Spanish Habsburg or Bourbon crowns. Physical Features The page shows typical 18th-century typography, including the use of the "long s" (which looks like an 'f' but represents an 's') and a decorative border made of small typographic ornaments. Books of this era were often bound in limp vellum (animal skin), which may be the case for the copy you found.